From the Disney Food Blog…read here.  Some good ideas here if you are heading to Disney soon!  I agree with 99% of them.

Most Important?

4. Make your reservations 180 days prior to your visit whenever possible. Nope — it’s not enough to just make reservations; you need to make them as early as possible. For most restaurants, that’s 180 days prior to the date you’re seeking. If you’re staying in a Disney hotel, you can book all of your reservations for up to 10 days beginning exactly 180 days before the first day of your trip.

16. Visit at slower times of the year to avoid crowds. While slow times at Disney are becoming more rare, there are still a few times during the year that you can go when the crowds are lower. Booking your visit in September, early January, early February, or May can lead to shorter lines and more dining options available.

#16 is really cool especially when you get free dining!